Since our rear Currie 9-inch runs a 5x5.5 bolt pattern, we got a pair of Spidertrax wheel adapters (PN WHS-004) to convert our old Dana 30s bolt pattern from 5x4.5 to 5x5.5. In addition to allowing us to run our new 5x5.5 wheels until we could get our new front axle installed, the 1.25-inch-wide spacers also mimicked the overall width of our new front axle during suspension mock-up. Even though we had Currie build our new F9 front housing to factory specs, the Dana 44 spindles, hubs, and rotors we used on the Reid Racing conversion knuckles increased the overall track width by about 2-inches for a wide and stable stance.